OpenID is an open, decentralized, free framework for user-centric digital identity.
OpenID starts with the concept that anyone can identify themselves on the Internet the same way websites do-with a URI (also called a URL or web address). Since URIs are at the very core of Web architecture, they provide a solid foundation for user-centric identity.
A. Culotta, and A. McCallum. Proceedings of the Workshop on Computationally Hard Problems and Joint Inference in Speech and Language Processing, page 41--48. New York City, New York, Association for Computational Linguistics, (June 2006)
Y. Yang, and X. Liu. SIGIR '99: Proceedings of the 22nd annual international ACM SIGIR conference on Research and development in information retrieval, page 42--49. New York, NY, USA, ACM Press, (1999)
J. Gama, and G. Castillo. Advances in Artificial Intelligence - IBERAMIA 2002: 8th Ibero-American Conference on AI, Seville, Spain, November 12-15, 2002. Proceedings, (2002)
S. Rendle, and L. Schmidt-Thieme. ICDM '06: Proceedings of the Sixth International Conference on Data Mining, page 1026--1031. Washington, DC, USA, IEEE Computer Society, (2006)
I. Dhillon. KDD '01: Proceedings of the seventh ACM SIGKDD international conference on Knowledge discovery and data mining, page 269--274. New York, NY, USA, ACM Press, (2001)
M. Vilain, H. Kautz, and P. van Beek. Readings in qualitative reasoning about physical systems, Morgan Kaufmann Publishers Inc., San Francisco, CA, USA, (1990)
D. Randell, Z. Cui, and A. Cohn. KR'92. Principles of Knowledge Representation and Reasoning: Proceedings of the Third International Conference, Morgan Kaufmann, San Mateo, California, (1992)